package com.yunji.system.service;

import com.yunji.common.cache.RedisCache;
import com.yunji.common.constant.CacheCode;
import com.yunji.common.constant.General;
import com.yunji.common.constant.UserCode;
import com.yunji.common.enums.common.UserStatus;
import com.yunji.common.exception.ServiceException;
import com.yunji.common.exception.user.*;
import com.yunji.common.model.domain.SysUserDO;
import com.yunji.common.model.dto.LoginInfo;
import com.yunji.common.model.dto.SmsLoginBody;
import com.yunji.common.utils.MessageUtils;
import com.yunji.common.utils.TimeUtils;
import com.yunji.common.utils.bean.BeanUtils;
import com.yunji.common.utils.ip.IpUtils;
import com.yunji.system.context.AuthenticationContextHolder;
import com.yunji.system.convert.LoginInfoConvert;
import com.yunji.system.manager.AsyncFactory;
import com.yunji.system.manager.AsyncManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;

import javax.annotation.Resource;
import java.util.Objects;

import static com.yunji.common.constant.CacheCode.SMS_KEY;

/**
 * 登录校验方法
 *
 * @author yunji
 */
@Component
public class SysLoginService {
    @Autowired
    private TokenService tokenService;
    
    @Resource
    private AuthenticationManager authenticationManager;

    @Autowired
    private RedisCache redisCache;

    @Autowired
    private ISysUserService userService;

    @Autowired
    private ISysConfigService configService;

    @Autowired
    private SysPermissionService permissionService;

    /**
     * 登录验证
     *
     * @param username 用户名
     * @param password 密码
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public String login(String username, String password, String code, String uuid) {
        // 验证码校验
        validateCaptcha(username, code, uuid);
        // 登录前置校验
        loginPreCheck(username, password);
        // 用户验证
        Authentication authentication = null;
        try {
            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, password);
            AuthenticationContextHolder.setContext(authenticationToken);
            // 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
            authentication = authenticationManager.authenticate(authenticationToken);
        } catch (Exception e) {
            if (e instanceof BadCredentialsException) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
                throw new UserPasswordNotMatchException();
            } else {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, e.getMessage()));
                throw new ServiceException(e.getMessage());
            }
        } finally {
            AuthenticationContextHolder.clearContext();
        }
        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        LoginInfo loginUser = (LoginInfo) authentication.getPrincipal();
        recordLoginInfo(loginUser.getUserId());
        // 生成token
        return tokenService.createToken(loginUser);
    }


    public String smsLogin(SmsLoginBody smsLoginBody) {
        checkSmsCaptcha(smsLoginBody);
        String username = smsLoginBody.getNumber();
        // 用户验证
        SysUserDO user = userService.selectUserByUserName(username);
        if (BeanUtils.isNull(user)) {
            throw new ServiceException(MessageUtils.message("user.not.exists"));
        } else if (UserStatus.DELETED.getCode().equals(user.getDelFlag())) {
            throw new ServiceException(MessageUtils.message("user.password.delete"));
        } else if (UserStatus.DISABLE.getCode().equals(user.getStatus())) {
            throw new ServiceException(MessageUtils.message("user.blocked"));
        }

        recordLoginInfo(user.getUserId());
        // 生成token
        return tokenService.createToken(LoginInfoConvert.convertLoginInfo(user));
    }

    /**
     * 校验验证码
     *
     * @param username 用户名
     * @param code     验证码
     * @param uuid     唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid) {
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled) {
            String verifyKey = CacheCode.CAPTCHA_CODE_KEY + BeanUtils.getString(uuid);
            String captcha = redisCache.get(verifyKey);
            redisCache.delete(verifyKey);
            if (captcha == null) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.expire")));
                throw new CaptchaExpireException();
            }
            if (!code.equalsIgnoreCase(captcha)) {
                AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
                throw new CaptchaException();
            }
        }
    }

    /**
     * @param smsLoginBody 校验参数
     * @Title checkSmsCaptcha
     * @Desc 校验短信验证码
     * @Date 2024-10-21 17:24:18.121
     */
    public void checkSmsCaptcha(SmsLoginBody smsLoginBody) {
        String number = smsLoginBody.getNumber();
        String code = smsLoginBody.getCode();

        Assert.isTrue(BeanUtils.isNotNull(number), "未找到手机号/邮箱号");
        Assert.isTrue(BeanUtils.isNotNull(code), "验证码不能为空");

        String captcha = redisCache.get(SMS_KEY + number);
        Assert.isTrue(BeanUtils.isNotNull(captcha), "验证码已失效");
        Assert.isTrue(Objects.equals(code, captcha), "验证码错误");
    }

    /**
     * 登录前置校验
     *
     * @param username 用户名
     * @param password 用户密码
     */
    public void loginPreCheck(String username, String password) {
        // 用户名或密码为空 错误
        if (BeanUtils.isNull(username) || BeanUtils.isNull(password)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserCode.PASSWORD_MIN_LENGTH || password.length() > UserCode.PASSWORD_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // 用户名不在指定范围内 错误
        if (username.length() < UserCode.USERNAME_MIN_LENGTH || username.length() > UserCode.USERNAME_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }
        // IP黑名单校验
        String blackStr = configService.selectConfigByKey("sys.login.blackIPList");
        if (IpUtils.isMatchedIp(blackStr, IpUtils.getIpAddr())) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, General.LOGIN_FAIL, MessageUtils.message("login.blocked")));
            throw new BlackListException();
        }
    }

    /**
     * 记录登录信息
     *
     * @param userId 用户ID
     */
    public void recordLoginInfo(Long userId) {
        SysUserDO sysUser = new SysUserDO();
        sysUser.setUserId(userId);
        sysUser.setLoginIp(IpUtils.getIpAddr());
        sysUser.setLoginDate(TimeUtils.getNowDate());
        userService.updateUserProfile(sysUser);
    }

}
